FLEXIBLE POWER CABLE
First Claim
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1. A flexible power cable comprising:
- A. three insulated power current conductors helically stranded together, B. three grounding conductors wound in the interstices of said power current conductors, C. a central insulated ground-check strand comprising, 1. a resiliently stretchable tensile member, 2. a plurality of ground-check wires wound in a short laylength around said member, 3. a cylindrical wall of polymeric insulation surrounding said wires, and D. an abrasion-resistant polymeric jacket surrounding said insulated conductors and said grounding conductors.
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Abstract
A flexible power cable for use on mining machines has a central insulated ground check strand comprising conductor wires that are wound around a stretchable tensile core.
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Citations
6 Claims
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1. A flexible power cable comprising:
- A. three insulated power current conductors helically stranded together, B. three grounding conductors wound in the interstices of said power current conductors, C. a central insulated ground-check strand comprising, 1. a resiliently stretchable tensile member, 2. a plurality of ground-check wires wound in a short laylength around said member, 3. a cylindrical wall of polymeric insulation surrounding said wires, and D. an abrasion-resistant polymeric jacket surrounding said insulated conductors and said grounding conductors.
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2. The cable of claim 1 wherein said power current conductors, said grounding conductors, and said ground-check wires comprise copper.
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3. a cylindrical wall of polymeric insulation surrounding said wires, and D. an abrasion-resistant polymeric jacket surrounding said insulated conductors and said grounding conductors.
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4. The cable of claim 1 wherein said tensile member comprises a polyvinyl chloride extrusion.
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5. The cable of claim 1 wherein said tensile member comprises nylon.
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6. The cable of claim 5 wherein said tensile member comprises a plurality of filaments.
Specification
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Current AssigneeAnaconda Acquisition Company
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Original AssigneeFloyd A. Wilson, Theodore E. Hansen
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InventorsWilson, Floyd A., Hansen, Theodore E.
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Primary Examiner(s)Myers, Lewis H.
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Assistant Examiner(s)Grimley, A. T.
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Application NumberUS05/230,364Time in Patent Office231 DaysField of Search174/115,113R,113C,116,27,11AR,11N,131AUS Class Current174/115CPC Class CodesH01B 7/182 comprising synthetic filamentsH01B 7/32 with arrangements for indic...H01B 9/00 Power cables
